The comment by Iranian Foreign Ministry spokesman Mohammad Ali Hosseini comes as the director of production of nuclear energy, Ahmad Fayaz Bakhsh, is holding talks in Moscow to try clarify the situation.
Iran denies claims by Russian contractor Atomstroieksport that Tehran has not made all payments on time.
On March 24, the UN Security Council adopted a new round of sanctions against Iran. Tehran denounced the move as "illegal, useless, and unjustified." more
Iran's Bushehr nuclear plant is more than 90 percent complete. RFE/RL presents a gallery of images from inside the facility. more